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OTHER LONG-TERM DEBT (Schedule of Other Long-Term Debt) (Details) - Tower's loans (including current maturities) [Member] - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total long-term loans from banks - principal amount	$ 138,239	$ 166,376
Fair value adjustments
Deferred issuance costs	(1,077)	(1,344)
Total long-term loans from banks	137,162	165,032
Capital leases - see Note 15C	15,854
Current maturities	(52,661)	(31,869)
Fair value	100,355	133,163
U.S. Dollars [Member]
Debt Instrument [Line Items]
Total long-term loans from banks - principal amount	40,000	40,000
JPY [Member]
Debt Instrument [Line Items]
Total long-term loans from banks - principal amount	$ 98,239	$ 126,376

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The fair value amount of total long-term debt.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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